/**
 * Handle the `experimental.session.compacting` hook.
 *
 * Reads rolebox runtime state (dispatch tasks, graph progress, function state,
 * loop coordinator state) from persisted state files and injects a concise
 * summary into the compaction context so critical state survives compression.
 *
 * Fully defensive: missing or corrupt state files silently produce empty
 * sections — never crashes compaction.
 */
export declare function handleCompacting(_input: {
    sessionID: string;
}, output: {
    context: string[];
    prompt?: string;
}, dir: string): Promise<void>;
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